Recent content by John Mulcahy

Looks like an issue with the Java runtime or the video driver.

The Info panel shows information for the current individual measurement selection, the one with the blue bar on an overlay graph like All SPL. You can change that by double-clicking on the measurement you want selected, or use Alt+up arrow/Alt+down arrow to go through the list or select one of...

That option is in the V5.40 beta release.

It's possible, yes, since the measures have different reference levels.

Interface behaviour can also change with sample rate, best check that. For headphone amps 48k should be fine.

Looks like an issue with clock rate differences between the input and output devices. If you add a loopback connection as a timing reference REW can use it to correct the clock difference.

The code is the same on all platforms, so differences are likely due to local settings such as whether you have chosen to display phase wrapped or unwrapped, whether the impulse response is plotted normalised and the input device SPL calibration.

Use the V5.40 beta version, it has a lot of changes including an option to put measurements in groups and sort the list alphabetically.

The distortion limits for most published specifications are 20 Hz to 20 kHz. Sample rate will have an effect if your limits exceed half the sample rate. For sweep length differences attach the mdat file with the measurements rather than images.

Which REW version? The V5.40 beta builds got this fix in May: Fixed: When stepped IMD measurements are plotted against the input level (rather than the generator level) the IMD reference tone level was used for the X axis instead of the total input rms level

Was that after dragging a measurement?

Builds updated today (beta 101) with these changes: Changed: When the FSAF excitation for a file measurement is saved there is also an "excfilt-" file which includes the effect of any filters applied Fixed: Magnitude division results had a +3dB offset when using the dBFS graph axis Fixed: The...

You can see it on the Info panel for the measurement.

The responses are being aligned, not just one part of the response. The difference in timing of the peaks you seem concerned about is around 2.6 us, which corresponds to less than a mm.

Debug information about the attempt to communicate with the 8c is logged in the rew_output.txt file in the REW log files folder, whose location is shown in the About REW dialog.